Sales Tax Calculation

[John Vozza <john@netrom.com>]

Running Minivend 3.12 and there appears to be an issue with sales tax
rounding.

Consider an order total of $24.25 with 6% tax. The correct tax should be
$1.46 vs the $1.45 that Minivend calculates. (24.25 * .06 = 1.455) 

Another example is an order of $113.25 with 6% tax. Correct tax is $6.80
vs Minivend's $6.79

Out of several hundred orders the client has found only 4 such errors but
errors none the less. (Well they only reported 4 errors, might be more. I 
did offer the client a 4 cent refund, they were not amused.)

Could some one point me in the right direction in the src code so that I
can try and correct this issue?

BTW - I did a quick search of the archives and while I did find several
references to this issue I found no solution.

Thanks

John
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